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Surgical correction of human eye refractive errors by active composite artificial muscle implants

a technology of composite artificial muscle and surgical correction, which is applied in the field of surgical correction of human eye refractive errors, can solve the problems of increasing the optical refraction power of the lens, many refractive errors associated with the human eye,

Inactive Publication Date: 2003-07-24
OPHTHALMOTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many refractive errors associated with the human eye.
This allows the elastic capsule of the lens to contract causing an increase in the sphericity of the lens, resulting in an increase in the optical refraction power of the lens.

Method used

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  • Surgical correction of human eye refractive errors by active composite artificial muscle implants
  • Surgical correction of human eye refractive errors by active composite artificial muscle implants
  • Surgical correction of human eye refractive errors by active composite artificial muscle implants

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[0083] This invention creates automatic (passive) or on-demand temporary change in eye length and corneal / scleral curvatures by the use of band assembly that constricts and / or expands either inherently or on demand. The invention employs composites artificial muscles in an implant or prosthesis to surgically correct presbyopia, hyperopia and myopia, on demand (virtual reading glasses). For example, this invention can induce temporary mild myopia, one to three diopters, which has been shown to enable presbyopes to read without the use of glasses in order to correct presbyopia, hyperopia, and myopia. The invention creates an active sphinctering smart band to encircle the sclera, implanted under the conjunctiva, preferably under the extraocular muscles which will expand or constrict, similar to a scleral buckle surgery. This increases or decreases the active length of the globe and changes the curvature of the cornea and thus corrects presbyopia, hyperopia, and myopia either automatic...

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Abstract

Correction of eye refractive errors such as presbyopia, hyperopia, myopia, and astigmatism by using either pre-tensioned or transcutaneously energized artificial muscle implants to change the axial length and the anterior curvatures of the eye globe by bringing the retina / macula region to coincide with the focal point. The implants are scleral constrictor bands, segments or ribs for inducing accommodation of a few diopters, to correct the refractive errors on demand or automatically. The implant comprises an active sphinctering band encircling the sclera, implanted under the conjunctiva and under the extraocular muscles to uniformly constrict the eye globe, to induce active temporary myopia (hyperopia) by increasing(decreasing) the length and curvature of the globe. Multiple and specially designed constrictor bands enable surgeons to correct astigmatism. The artificial muscles comprise materials such as composite magnetic shape memory (MSM), heat shrink, shape memory alloy-silicone rubber, electroactive ionic polymeric artificial muscles or electrochemically contractile ionic polymers bands.

Description

[0001] This application is a continuation-in-part application of U.S. patent application Ser. No. 09 / 633,023, entitled "Surgical Correction of Human Eye Refractive Errors by Active Composite Artificial Muscle Implants", filed on Aug. 4, 2000, the teachings of which are incorporated herein by reference.[0002] 1. Field of the Invention (Technical Field)[0003] The invention relates to surgical correction of human eye refractive errors such as presbyopia, hyperopia, myopia, and astigmatism. More particularly, it is related to surgical corrections of such errors with implantation of a prosthesis for increasing or decreasing the eye length and scleral, as well a corneal, curvatures, and thus bringing the retina / macula region to coincide with the focal point of the eye. The present invention also relates to a signal energized smart prostheses equipped with composite artificial muscles for automatic correction of presbyopia. This invention can also be applicable to any medical problem requi...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61B17/04A61F2/08A61F2/14A61N2/02
CPCA61B17/04A61N2/02A61F2002/0894A61F2/147
Inventor SHAHINPOOR, MOHSENSHAHINPOOR, PARSASOLTANPOUR, DAVID
Owner OPHTHALMOTRONICS
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